NURS231 Pathophysiology Final Exam
Higher Education Nursing Curriculum –
2026/2027 Academic Year
Verified Questions and ANSWERs for
University-Level Nursing Students
SECTION A: CELLULAR ADAPTATION, INJURY, AND DEATH
Question 1
A 58-year-old patient with chronic gastroesophageal reflux disease has developed Barrett's esophagus,
in which the normal stratified squamous epithelium of the lower esophagus is replaced by columnar
epithelium. This represents which type of cellular adaptation?
A) Hyperplasia
B) Hypertrophy
C) Metaplasia
D) Dysplasia
ANSWER: C) Metaplasia
Rationale: Metaplasia is the reversible replacement of one differentiated cell type with another, often in
response to chronic irritation or inflammation. In Barrett's esophagus, the esophageal squamous
epithelium transforms into columnar epithelium similar to that found in the stomach or intestines as an
,adaptive response to chronic acid exposure. This change is protective in the short term but increases the
risk of adenocarcinoma.
Question 2
A bodybuilder who engages in heavy resistance training develops enlarged skeletal muscles. This
represents which type of cellular adaptation?
A) Hyperplasia
B) Hypertrophy
C) Metaplasia
D) Atrophy
ANSWER: B) Hypertrophy
Rationale: Hypertrophy is an increase in cell size leading to enlargement of the organ or tissue. Skeletal
muscle hypertrophy occurs in response to increased workload and is a normal physiological adaptation.
Unlike hyperplasia, which involves an increase in cell number, hypertrophy involves an increase in the
size of existing cells.
Question 3
Which of the following best describes apoptosis?
A) Uncontrolled cell death with inflammation
B) Programmed cell death without inflammation
C) Cell death caused by ischemia
D) Rapid loss of plasma membrane structure
ANSWER: B) Programmed cell death without inflammation
Rationale: Apoptosis is a highly regulated, energy-dependent process of programmed cell death that
eliminates unwanted or damaged cells without triggering an inflammatory response. It is essential for
,normal development, tissue homeostasis, and removal of damaged cells. In contrast, necrosis is
unregulated cell death that typically triggers inflammation.
Question 4
What is the most common cause of cellular injury leading to necrosis, particularly in the kidney and
heart?
A) Free radical damage
B) Hypoxia
C) Chemical injury
D) Physical trauma
ANSWER: B) Hypoxia
Rationale: Hypoxia, or oxygen deficiency, is the single most common cause of cellular injury leading to
necrosis. The heart and kidneys are particularly vulnerable to hypoxic injury due to their high metabolic
demands. Hypoxia disrupts aerobic metabolism, leading to ATP depletion, failure of the sodium-
potassium pump, cellular swelling, and ultimately cell death.
Question 5
Persistent dysplasia eventually results in cancer.
A) True
B) False
ANSWER: A) True
Rationale: Dysplasia is characterized by abnormal cellular growth, changes in cell size, shape, and
organization. While dysplasia is not cancer, it is considered a preneoplastic condition. If the underlying
cause persists, dysplastic cells can progress to carcinoma in situ and eventually invasive cancer.
However, dysplasia can sometimes be reversible if the causative stimulus is removed.
, Question 6
A 72-year-old patient with prolonged immobility develops muscle wasting. This represents which type of
cellular adaptation?
A) Hypertrophy
B) Hyperplasia
C) Atrophy
D) Metaplasia
ANSWER: C) Atrophy
Rationale: Atrophy is a decrease in cell size and organ size due to reduced workload, denervation,
diminished blood supply, inadequate nutrition, or aging. In this case, disuse atrophy occurs from
prolonged immobility, leading to a reduction in muscle fiber size and protein content.
Question 7
Necrosis is characterized by all of the following EXCEPT:
A) Rapid loss of plasma membrane structure
B) Mitochondrial dysfunction
C) Organelle swelling
D) Programmed cellular self-destruction
ANSWER: D) Programmed cellular self-destruction
Rationale: Necrosis is an unregulated, pathological form of cell death characterized by rapid loss of
plasma membrane integrity, organelle swelling, and mitochondrial dysfunction. It typically results from
severe injury and triggers an inflammatory response. Programmed cellular self-destruction is a feature
of apoptosis, not necrosis.
Question 8
Higher Education Nursing Curriculum –
2026/2027 Academic Year
Verified Questions and ANSWERs for
University-Level Nursing Students
SECTION A: CELLULAR ADAPTATION, INJURY, AND DEATH
Question 1
A 58-year-old patient with chronic gastroesophageal reflux disease has developed Barrett's esophagus,
in which the normal stratified squamous epithelium of the lower esophagus is replaced by columnar
epithelium. This represents which type of cellular adaptation?
A) Hyperplasia
B) Hypertrophy
C) Metaplasia
D) Dysplasia
ANSWER: C) Metaplasia
Rationale: Metaplasia is the reversible replacement of one differentiated cell type with another, often in
response to chronic irritation or inflammation. In Barrett's esophagus, the esophageal squamous
epithelium transforms into columnar epithelium similar to that found in the stomach or intestines as an
,adaptive response to chronic acid exposure. This change is protective in the short term but increases the
risk of adenocarcinoma.
Question 2
A bodybuilder who engages in heavy resistance training develops enlarged skeletal muscles. This
represents which type of cellular adaptation?
A) Hyperplasia
B) Hypertrophy
C) Metaplasia
D) Atrophy
ANSWER: B) Hypertrophy
Rationale: Hypertrophy is an increase in cell size leading to enlargement of the organ or tissue. Skeletal
muscle hypertrophy occurs in response to increased workload and is a normal physiological adaptation.
Unlike hyperplasia, which involves an increase in cell number, hypertrophy involves an increase in the
size of existing cells.
Question 3
Which of the following best describes apoptosis?
A) Uncontrolled cell death with inflammation
B) Programmed cell death without inflammation
C) Cell death caused by ischemia
D) Rapid loss of plasma membrane structure
ANSWER: B) Programmed cell death without inflammation
Rationale: Apoptosis is a highly regulated, energy-dependent process of programmed cell death that
eliminates unwanted or damaged cells without triggering an inflammatory response. It is essential for
,normal development, tissue homeostasis, and removal of damaged cells. In contrast, necrosis is
unregulated cell death that typically triggers inflammation.
Question 4
What is the most common cause of cellular injury leading to necrosis, particularly in the kidney and
heart?
A) Free radical damage
B) Hypoxia
C) Chemical injury
D) Physical trauma
ANSWER: B) Hypoxia
Rationale: Hypoxia, or oxygen deficiency, is the single most common cause of cellular injury leading to
necrosis. The heart and kidneys are particularly vulnerable to hypoxic injury due to their high metabolic
demands. Hypoxia disrupts aerobic metabolism, leading to ATP depletion, failure of the sodium-
potassium pump, cellular swelling, and ultimately cell death.
Question 5
Persistent dysplasia eventually results in cancer.
A) True
B) False
ANSWER: A) True
Rationale: Dysplasia is characterized by abnormal cellular growth, changes in cell size, shape, and
organization. While dysplasia is not cancer, it is considered a preneoplastic condition. If the underlying
cause persists, dysplastic cells can progress to carcinoma in situ and eventually invasive cancer.
However, dysplasia can sometimes be reversible if the causative stimulus is removed.
, Question 6
A 72-year-old patient with prolonged immobility develops muscle wasting. This represents which type of
cellular adaptation?
A) Hypertrophy
B) Hyperplasia
C) Atrophy
D) Metaplasia
ANSWER: C) Atrophy
Rationale: Atrophy is a decrease in cell size and organ size due to reduced workload, denervation,
diminished blood supply, inadequate nutrition, or aging. In this case, disuse atrophy occurs from
prolonged immobility, leading to a reduction in muscle fiber size and protein content.
Question 7
Necrosis is characterized by all of the following EXCEPT:
A) Rapid loss of plasma membrane structure
B) Mitochondrial dysfunction
C) Organelle swelling
D) Programmed cellular self-destruction
ANSWER: D) Programmed cellular self-destruction
Rationale: Necrosis is an unregulated, pathological form of cell death characterized by rapid loss of
plasma membrane integrity, organelle swelling, and mitochondrial dysfunction. It typically results from
severe injury and triggers an inflammatory response. Programmed cellular self-destruction is a feature
of apoptosis, not necrosis.
Question 8
